[Bug 1350416] Re: Trusty -> Utopic release upgrade reportedly fails

[Grizzly]

Just to say that today I wanted to convert my trusty to utopic and it
was a total desaster. In addition to what was mentioned above, there was
no initrd for kernel 3.16 created, which led to a nice kernel panic when
rebooting. BTRFS saved me, so I could roll back to the state before the
update, sudo update-grub and will stay on trusty a while, probably
checking the release upgrade first in a vm drawn from my current
installation.

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https://bugs.launchpad.net/bugs/1350416

Title:
  Trusty -> Utopic release upgrade reportedly fails

Status in “ubuntu-release-upgrader” package in Ubuntu:
  Fix Released

Bug description:
  I repeated this twice, the last time beginning with a totally out-of-
  box Ubuntu GNOME 14.04.1 installation, fully updated, then ran the
  upgrade via "update-manager -d -c".

  The failure begins with a window saying:

  Could not install 'cgmanager'

  The upgrade will continue but the 'cgmanager' package may not be in a
  working state. Please consider submitting a bug report about it.

  subprocess installed post-installation script returned error exit
  status 1

  After clicking on the close button in that window just a minute or two
  later a new window appears that says:

  Could not install the upgrades

  The upgrade has aborted. Your system could be in an unusable state. A
  recovery will run now (dpkg --configure -a).

  Then after a substantial amount of time (30 to 45 minutes) a window
  appears that says:

  Upgrade complete

  The upgrade has completed but there were errors during the upgrade
  process.

  Time to reboot and see what I have.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: ubuntu-release-upgrader-core 1:14.10.5
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic i686
  ApportVersion: 2.14.5-0ubuntu1
  Architecture: i386
  CrashDB: ubuntu
  CurrentDesktop: GNOME
  Date: Wed Jul 30 10:26:27 2014
  InstallationDate: Installed on 2014-07-30 (0 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04.1 LTS "Trusty Tahr" - Release i386 (20140722.2)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to utopic on 2014-07-30 (0 days ago)
  VarLogDistupgradeTermlog:

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